<header>
    <nav class="navbar navbar-expand-lg navbar-light bg-light">
        <a class="navbar-brand" href="#"><img src="./images/logo.png"></a>
        <button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarNav" aria-controls="navbarNav" aria-expanded="false" aria-label="Toggle navigation">
            <span class="navbar-toggler-icon"></span>
        </button>
        <div class="collapse navbar-collapse" id="navbarNav">
            <ul class="navbar-nav">
                <li class="nav-item active"> <a class="nav-link" href="./"><i class="bi bi-house-fill"></i>首页 <span class="sr-only">(current)</span></a> </li>
                <li class="nav-item"> <a class="nav-link" href="../page/product/index.php">产品介绍</a> </li>
                <li class="nav-item"> <a class="nav-link" href="../page/news/index.php">新闻资讯</a> </li>
                <li class="nav-item"> <a class="nav-link" href="../page/serve/index.php">售后服务</a> </li>
                <li class="nav-item"> <a class="nav-link" href="../page/about/index.php">关于我们</a> </li>
                <li class="nav-item"> <a class="nav-link" href="../page/join/index.php">招商加盟</a> </li>
                <li class="nav-item"> <a class="nav-link" href="../page/recruitment/index.php">公司招聘</a> </li>
                <style>

                </style>
                <li class="nav-item dropdown">
                    <a class="nav-link dropdown-toggle" href="#" id="qq" role="button" data-toggle="dropdown" aria-expanded="false">
                        QQ
                    </a>
                    <div class="dropdown-menu" aria-labelledby="qq">
                        <img src="./images/QQ.png">
                    </div>
                </li>
                <li class="nav-item dropdown">
                    <a class="nav-link dropdown-toggle" href="#" id="wx" role="button" data-toggle="dropdown" aria-expanded="false">
                        微信
                    </a>
                    <div class="dropdown-menu" aria-labelledby="wx">
                        <img src="./images/WX.png">
                    </div>
                </li>
            </ul>
        </div>
    </nav>
</header>